Moebius transform of A000031 (starting at term 0).

Terms

a(0) =1a(1) =1a(2) =2a(3) =2a(4) =5a(5) =4a(6) =13a(7) =16a(8) =33a(9) =53a(10) =107a(11) =178a(12) =351a(13) =617a(14) =1174a(15) =2172a(16) =4115a(17) =7671a(18) =14601a(19) =27534a(20) =52472a(21) =99771a(22) =190745a(23) =364520a(24) =699246a(25) =1341831a(26) =2581392a(27) =4970434a(28) =9587579a(29) =18511552